Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
5630400D21RikNM_01026510090IGnT    B130048E03    C2 GlcNAcT    Gcnt1   
5630400D21RikNM_17344210090IGnT    B130048E03    C2 GlcNAcT    Gcnt1   

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002